Unity 2D游戲相機控制（水平，豎直，角色居中三種模式）
來源：程序員人生 發布時間：2015-05-19 08:00:21 閱讀次數：5327次
做2D游戲的時候，不過有3種模式，1種是只有豎直向上，1種是只有水平方向，1種是有水平又有豎直方向，我最近做游戲多關卡模式，不同模式就有著不1樣的相機控制，依照平時的寫法，或許有很多人就1下子寫了3個相機腳本，現在我用了1個枚舉類型來控制3個不1樣的相機，貼代碼：using UnityEngine;
using System.Collections;
public class CameraCtrl : MonoBehaviour {
public enum CameraType
{
Vertical,
Horizontal,
Normal
}
public CameraType cameraType;
public float dampTime = 1.5f;
public Transform target;
// 相機移動速度，初始速度清零
private Vector3 velocity = Vector3.zero;
// 相機單例
private static CameraCtrl instance;
public static CameraCtrl Instance {
get {
return instance;
}
}
// 屏幕的默許寬高的1/100 (預編譯)
#if UNITY_ANDROID
private static float devHeight = 8.54f;
private static float devWidth = 4.8f;
#elif UNITY_IPHONE
private static float devHeight = 9.6f;
private static float devWidth = 6.4f;
#else
private static float devHeight = 19.20f;
private static float devWidth = 10.80f;
#endif
// Use this for initialization
void Awake () {
instance = this;
// 屏幕適配
float screenHeight = Screen.height;
//Debug.Log ("screenHeight = " + screenHeight);
//this.GetComponent<Camera>().orthographicSize = screenHeight / 200.0f;
float orthographicSize = this.GetComponent<Camera>().orthographicSize;
float aspectRatio = Screen.width * 1.0f / Screen.height;
float cameraWidth = orthographicSize * 2 * aspectRatio;
//Debug.Log ("cameraWidth = " + cameraWidth);
if (cameraWidth < devWidth)
{
orthographicSize = devWidth / (2 * aspectRatio);
Debug.Log ("new orthographicSize = " + orthographicSize);
this.GetComponent<Camera>().orthographicSize = orthographicSize;
}
}
// Update is called once per frame
void LateUpdate ()
{
if (target) {
SetCamera();
} else {
SetTarget();
}
}
// 設置相機
void SetCamera () {
Vector3 point = GetComponent<Camera> ().WorldToViewportPoint (target.position);
Vector3 delta = target.position - GetComponent<Camera> ().ViewportToWorldPoint (new Vector3 (0.5f, 0.5f, point.z));
Vector3 destination = transform.position + delta;
switch (cameraType) {
case CameraType.Vertical:// 豎直相機
transform.position = Vector3.SmoothDamp (transform.position,
new Vector3 (transform.position.x, destination.y, destination.z),
ref velocity, dampTime);
break;
case CameraType.Horizontal:// 水平相機
transform.position = Vector3.SmoothDamp (transform.position,
new Vector3 (destination.x, transform.position.y, destination.z),
ref velocity, dampTime);
break;
case CameraType.Normal:// 無窮制的相機
transform.position = Vector3.SmoothDamp (transform.position,
destination,
ref velocity, dampTime);
break;
default:
break;
}
}
// 設置目標
void SetTarget () {
target = GameObject.FindGameObjectWithTag ("Player").transform;
}
}
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